You can, and it will not give you what you want. Code export is only available on paid Webflow Workspace plans, not Site plans. It ships the HTML, CSS, JavaScript and the files in your Assets panel, but it deliberately leaves out CMS content, ecommerce, native form handling, site search, password protection and every language except your primary one. Your exported 301 redirects also stop working once the site is self-hosted, because those were being served by Webflow. What you get is a snapshot of a static site with the dynamic parts removed, which is why the export alone is not a migration.